mercier



D. MERCIER.

MACHINE FOR STRETCHING HIDES AND SKINS.

APPUCATION FILED SEPT. I l. I913.

Patented Aug. 1, 1916.

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Zggwg 7 /M/ g D. MERCIER. MACHINE FOR STRETCHING HIDES AND SKINS.

APPLICATION FILED SEPT-11,1913.

Patented Aug. 1, 1916.

faw wfl i f DANIEL MERCIER, 0F ANNONAY, FRANCE.

MACHINE FOR STRETCHING HIDES AND SKINS.

Specification of Letters Patent.

Patented Aug. 1, 1916.

Application filed September 11, 1913. Serial No. 789,222.

To all whom it may concern Be it known that I, DANIEL Mnnomn, citizen of the Republic of France, residing at 3 Rue Basse Sainte Claire, Annonay, Ardeche, in the Republic of France, have invented new and useful Improvements in Machines for Stretching Hides and Skins, of which the following is a specification.

This invention relates to a drum intended for use in machines for stretching and softening tawed and chrome-tanned hides and skins. The said drum which is particularly adapted for dressing the body of the hide has two sets of blades on its periphery, the blades in one set having a dull edge and being arranged on a part of the periphery of the drum, which is located farther from the axis of rotation of the drum than the remaining part of the drum periphery, said blades acting to stretch and draw the hide while the blades in the other set are sharp and arranged on the part of the periphery of the drum which is nearer the axis of rotation, said blades acting to scrape the hide which has ust been stretched by the projecting dull blades.

The invention consists in novel features and combinations of parts which will be pointed out in the appended claim.

In the annexed drawings, given by way of example: Figure 1 is a side view 0 one form of the stretching drum for the body of the hide; Fig. 2 is a side view of another embodiment of said stretching drum; Fig. 3 is a cross section of the same; Figs. 4 and 5 are enlarged details of a stretching blade with a dull edge; Figs. 6 and 7 are enlarged details of a scraping blade with a sharp edge.

In the construction shown in Fig. 1, the drum 1 is cylindrical and keyed eccentrically on the shaft 2 which is rotated by any suitable nieans. Stretching blades 3 (Figs. 4 and 5) having a dull edge, are arrange radially on the part of the periphery of the drum which has the greater radius of rotation and scraping blades 4 (Figs. 6 and 7 having a sharp edge and inclined forwardly on the radius, in the direction of rotation, are secured on the part of the drum periphery which has the smaller radius.

All the blades have preferably a curved or are shaped edge as shown in Figs. 4 and Copies of this patent may be obtained for five cents each, by addressing the 6 and are provided with holes 9 receiving bolts which permit of securing said blades on radial flanges or ledges formed on the drum. The blades can thus be easily removed and replaced by others.

The stretching blades 3 have for their effect to hollow and stretch the hide and remove the creases thereof while the scraping blades 4 cut and remove from the stretched hide all projecting and undesirable matters.

The drum shown in Figs. 2 and 3 differs from that shown in Fig. 1 in that it may be mounted on the shaft 2 with a varying eccentricity. For this purpose, it is provided with a central hole 5 of a relatively large diameter through which the shaft 2 extends and has also two or more elongated slots 6 parallel with each other. The drum 1 is secured on the shaft through the medium of two side plates 7 keyed on the shaft and provided with a central hole having the same diameter as the shaft 2 and two holes through which threaded bolts 8 are engaged, said bolts extending through the elongated slots 6 in the drum and carrying a nut so as to hold the side plates and the drum firmly together. By this arrangement, the drum 1 may be easily displaced with respect to the shaft 2 so that its eccentricity may be varied at will depending upon the effect to be produced on the hide under treatment.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

In a machine for stretching hides and skins, the combination of a shaft, a cylindrical stretching drum carried eccentrically by said shaft, means for varying the eccentricity of the drum on the shaft, and blades secured on the periphery of the drum, said blades comprising widely spaced stretching blades, with a dull edge, and closely adjacent scraping blades with a sharp edge, substantially as described and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DANIEL MERCIER.

Witnesses MEXIUS PAnrrz, ADoLrHn PAYo.

Commissioner of Iatents- Washington, .D. 0. 

